Data Breach Alert: CST Canada Coal Limited
Data breaches are becoming an increasingly common threat in today’s digital landscape, and the recent incident involving CST Canada Coal Limited is a reminder of the importance of cybersecurity. Discovered on December 5, 2025, this breach has raised concerns about the safety of sensitive information and the potential implications for affected parties.
About CST Canada Coal
CST Canada Coal Limited is a prominent metallurgical coal mining company based in Canada. The firm specializes in producing low-volatile coking coal, which is primarily exported to the global steel industry. The operation of the Grande Cache Coal Mine is a significant aspect of its business, contributing to the economy and supporting various industries worldwide.
What Happened
On December 5, 2025, a data breach was discovered involving CST Canada Coal Limited, attributed to a threat actor known as Qilin. While the exact size of the leak remains unknown, the breach has raised alarms about the potential exposure of sensitive data, which could affect both the company and its stakeholders.
Next Steps
If you believe you may have been affected by this data breach or have concerns regarding the security of your personal information, it is crucial to take action. We at the Srourian Law Firm (SLF) are here to help you navigate this challenging situation. We encourage affected parties to reach out to us to discuss your options and understand the best course of action moving forward.
LINKS:

Srourian Law Firm is investigating a potential class action lawsuit against CST Canada Coal for a recent data breach.
If you received a NOTICE OF DATA BREACH letter from CST Canada Coal, complete the form below so we can discuss your legal options.
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